/Engine/Source/Runtime/Engine/Public/Animation/AnimCurveTypes.h
Set flags of curve named InName to InFlags. Inserts a new default value if an element for InName does not already exist and then sets its flags to InFlags. Note that this performs a binary search per-call and can potentially cause a re-sort. Consider using a combiner operation to set multiple element's flags.
void SetFlags ( [FName](API\Runtime\Core\UObject\FName) InName, [UE::Anim::ECurveElementFlags](API\Runtime\Engine\Animation\UE__Anim__ECurveElementFlags) InFlags )